劇場版ポケットモンスター ココ

The name of this movie is 劇場版ポケットモンスター ココ released in 2020-12-25 and it's main theme is In the Forest of Okoya, Koko is a feral child who has been raised as a Pokémon by the Mythical Pokémon Zarude. Koko has grown up never doubting that he is a Pokémon even though he can't really use any sort of moves. Ash Ketchum and Pikachu meet Koko and help him protect the Great Tree from the crooked scientist Dr. Zed..